Question

3

Why I can't set 2 CPU on virtualbox xp?

rated 0 times [ 3] [ 0] / answers: 1 / hits: 28102 / 3 Years ago, thu, september 23, 2021, 5:16:16

I set 2 CPU on virtualbox xp and boot successfully.

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But when I use speccy to check.

It says I only have 1 cpu and only 1 core.

enter image description here

What happened?

How do I enable the second CPU?

Thank you~

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answered 3 Years ago serveeel · Accepted Answer

For Windows 64-bit guest and if you want to use more than 1 CPU in your guest we need to enable I/O APIC prior to installing Windows.

Enabling the I/O APIC is required for 64-bit guest operating systems, especially Windows Vista; it is also required if you want to use more than one virtual CPU in a virtual machine.

Reference: Virtual Box User Manual

This can be done in the System -> Motherboard setting in the VirtualBox Manager.

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Note: These setting has to be made before installing Windows as only then Windows will be installed with the appropriate kernel.